docs: iceberg metadata export - #2748
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killme2008
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Aug 14, 2026
| GreptimeDB types map cleanly to Iceberg for the common cases (booleans, signed integers, floats, strings, binary, | ||
| date, timestamp). A few things to be aware of, especially in Spark: | ||
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| - **Declare the time index as `TIMESTAMP(6)`.** GreptimeDB's default `TIMESTAMP` is millisecond precision, but the |
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In that case, does it mean historical tables cannot use this feature, and only newly created tables with the correct TIME INDEX type configured can use it? I think this issue needs to be addressed.
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this is hard to fix from iceberg side because only microsends is supported from iceberg, especially for spark implementation, it assumes stats data in parquet files are in microseconds unit.
I'm trying to allow user to run alter table to change the time index unit.
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What changed
Initial version of iceberg user guide in enterprise section.
Scope
TODO: backport to 1.2 if everything looks good.
Checklist